(19)
(11) EP 2 921 677 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.12.2015 Bulletin 2015/49

(43) Date of publication A2:
23.09.2015 Bulletin 2015/39

(21) Application number: 15153361.9

(22) Date of filing: 30.01.2015
(51) International Patent Classification (IPC): 
F02D 41/02(2006.01)
F02D 41/00(2006.01)
 F02D 41/14(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 31.01.2014 JP 2014017316

(71) Applicant: Toyota Jidosha Kabushiki Kaisha
Toyota-shi, Aichi-ken 471-8571 (JP)

(72) Inventors:
  • Ushida, Norihiro
    Toyota-Shi, Aichi-Ken, 471-8571 (JP)
  • Shirasawa, Takeru
    Toyota-Shi, Aichi-Ken, 471-8571 (JP)

(74) Representative: Intès, Didier Gérard André et al
Cabinet Beau de Loménie 158, rue de l'Université
75340 Paris Cedex 07
75340 Paris Cedex 07 (FR)

   


(54) EXHAUST GAS PURIFICATION APPARATUS FOR AN INTERNAL COMBUSTION ENGINE


(57) The concentration of an additive agent supplied to a catalyst is made more uniform. Provision is made for a variable capacity type turbocharger (50) arranged in an exhaust passage (3), a catalyst (5) arranged at the downstream side of the variable capacity type turbocharger (50), and a supply device for supplying the additive agent into the exhaust passage (3) at a location upstream of the catalyst, wherein a control device is provided that adjusts, when supplying the additive agent from the supply device, the degree of opening of nozzle vanes (57) in such a manner that the speed of a swirling flow of exhaust gas generated when the exhaust gas of the internal combustion engine passes through the variable capacity type turbocharger (50) falls within a predetermined range.







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